Electric door-opener.



PATENTED APR. 30, 1907. J. LOOH.

ELECTRIC DOOR OPENER.

APPLICATION FILED APR.1'7,1906.

3 SHEETS-SHEET 1.

J g E L- 5 E INVENTOR JaJefw/E .[ocfi BY ya 2A ATTORNEY No. 852,279. vPATENTED APR. so, 1907 J.LOCH.

ELEGTRIU DOOR OPENER.

APPLICATION FILBDAPR. 17.1906.

3 SHEETS-BHEET 2.

. WITNESSES: INVENTOR Imp/Mach ATTORNEY n1: "clams PETERS co, \wsnmmmv,v. c.

JOSEPH LOOH, OF BROOKLYN, NEIV YORK.

ELECTRIC DOOR-OPENER.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed Aprill7,1906. Serial No. 312,198.

To In whom it may concern:

Be it known that I, JOSEPH Loon, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improvements in Electric Door-Openers, of whichthe following is a specification.

This invention resides in certain features of construction by which asimple structure is obtained and one which when released will notprematurely re-engage.

This invention is set forth in the following specification and claim andillustrated in the annexed drawing, in which:

Figure 1 is a side elevation of a door opener embodying this invention.Fig. 2 is a view like Fig. 1 with p arts in a different position. Fig. 3is a section along w w Fig. 1. Fig. i is a section along a; (E Fig. 1.Fig. 5 is a section along y 1 Fig. 1. Fig. 6 is a section along .2 2Fig. 1. Fig. 7 shows a detent or dictator. Fig. 8 shows the armature.

A casing a adapted to be set in a door frame is shown with a catch orbolt 1) swinging on pivot c. A spring (Z returns the latch or bolt 1) toengaging ,or locked position. The catch has an arm or tail to which at eis pivoted a slide or connecting piece f. This slide pivoted to the boltconnects the bolt and a lever g. Said slide straddles the lever or itsfulcrum part 7L and can slide on but rotates with the lever. The slit inthe connection f has parallel or straight edges Fig. 5, and saidconnection straddles or slides on a similarly shaped part on the leverfulcrum. A sliding non rotary connection is thus made between the partsf and h.

The free end of the lever 9 can be locked or engaged by an armature iand when so locked the bolt 1) is held against motion by the connectionf straddling the fulcrum ft of the locked lever g. When the armature isattracted or in other words when the magnet it has been energized, thelever g has been released and by a push or force suitably applied to androcking the bolt Z) and its tail the slide f is caused to slip along oracross the fulcrum it but without losing engagement therewith.

The armature comprises four lugs, namely the two hinge lugs 'i for hingepin m, the stop lug i and the locking lug i The looking lug engages thelever 9 when looking the same.

When the armature is attracted by the magnet Fig. 2 the lug or look parti is moved to releasing position and the lever g is now free to turn orswing for the bolt 1) to be moved or swing to opening position.

To the armature at 0 is pivoted a detent or what might might be called adictator comprising a stop or detent face p and a tail or releasingpiece Q and a second tail or armature piece 1. The detent is shown inFig. 7. When the armature i is attracted by the magnet the tail 7'' islikewise attracted and as the armature i moves to the magnet the face 2)of the detent comes to rest on a rib or shoulder piece 8 (Fig. 2) of thecasing. If now the electric current is interrupted or the magnet Itdeenergized the armature i or its lock part i" is nevertheless held backor clear to leave the lever g and bolt b free to move or the door to beopened. The detent p is noticed in Fig. 2 holding the armature i clear.

As the lever g swings back with the opening bolt such lever impinges orpresses on the swell or curvature at the free end. portion of tail Q andthe detent is thus rocked about pivot 0 a sufficient extent to slip facep off the ridge or lug s from the position shown in Fig. 2 to that ofFig. 1. The armature i is now free and its spring or blade 25 moves sucharmature back for its locking lap i to be in position to again engagelever g.

The lock lap i is beveled in one direction to allow the lever g toretrrn to closing or looking position but said lever 9 cannot open untilarmature i has moved to releasing position.

I claim:

1. In an electric door opener, a magnet, an armature, a lever engaged bythe armature, and a strike and a slide pivoted to the strike and made tostraddle the fulcrum of the le ver for connecting the strike and lever.

2. In an electric door opener, a magnet and armatrre, a lever engaged bythe arm ature, a strike, and a slide pivoted to the strike and made tostraddle the fulcrum of the lever.

3. In an electric door opener,-a magnet and arm at re, a lever engagedby the arm ature, a strike and a connecting piece pivoted to the strikeand made to slide on and nonrotatively engage the lever.

4. In an electric door opener, a magnet, a strike controlling thearmatrre, and a dictator or holding device for the arnvatrre to holdsich armat re in releasing position with respect to the strike.

5. An electric door opener, comprising a magnet, a strike controllingarmature, a holding device to keep the armature retracted With respectto the said strike, and a rib or stop for the holding device.

6. In an electric door opener a magnet,a Strike controlling armature, aholding device actuated by the magnet adapted to hold the armature inengagement With the poles of the magnet, and a rib or step forsupporting the holding device when holding the magnet in disengagingposition.

7. A door opener comprising a magnet, an armature and holding deviceboth within the field of the magnet, said holding device adapted to holdthe armature in engagement With the poles of the magnet and a strikeengaged by the armature.

8. A door opener comprising a magnet, an armature, a holding devicepivoted to the armature and attracted by the magnet, said holding devicebeing adapted to hold the armature in engagement with the poles of themagnet and a strike engaged by the armature.

9. A door opener comprising a magnet and i armature with a holdingdevice having an ar mature tail or portion. attracted by said. m agnetsaid holding device being adapted to hold the armature in engagementwith the poles of the magnet.

10. A door opener comprising a strike and lever, an armature forei'igaging the lever, and a holding device for the armature having areleasing tail or arm, said holding device being adapted to hold thearmature in engagement with the poles of the magnet.

11. A door opener comprising a strike and lever, an armatrre forengaging the lever, and a holding device for holding the annatrre inengagement with the poles ol the magnet said holding device having areleasing tail or arm, said releasing tail being placed in the path ofthe lever, to move the holding device to releasing position by saidlever.

In testimony whereof have hereitnto set any hand in the presence of twosubscribing Witnesses.

JOSEPH LOCI-l.

Vitnesses:

ED\VARD l VmsNER, GEORGE HULsnnRG.

